(with) tongue in cheek

(with) tongue in cheek

Humorous or intended as a joke, though seeming or appearing to be serious. I thought it was obvious that my comments were tongue in cheek, but I guess I delivered them with too much of a straight face, because it seems like I offended several people at the party. The zombie movie, very much with tongue in cheek, gives a clever criticism of American consumerism.
See also: cheek, tongue